Abstract: A packing paper box with a moisture resistant band having a function to prevent a content from being leaked out of the paper box even when the paper box is partially deformed due to a careless handling during transportation or storage thereof. The moisture resistant band has a strip shape and is attached to junctions between the upper edges of vertical wall members of the paper box and the upper flap members of the paper box and between the lower edges of the vertical wall members and the lower flap members of the paper box. The moisture resistant band has a predetermined width and serves to sufficiently seal corners of the paper box upon folding the flap members. By virtue of the moisture resistant band, the packing paper box has a simple construction capable of providing both a moisture resistance and a durability.

Abstract: A paper box for packing detergent which is provided at its inner surface with a strip-shaped inlet so that the inlet closes a tear tape portion to be cut off when the box is opened and which is designed to reduce manufacturing cost, improve productivity and maintain watertightness. The paper box has four vertical wall members, top members extended from upper ends of the vertical wall members, bottom members extended from lower ends of the vertical wall members, a tear tape portion integrally formed at upper portions of three vertical wall members selected from the four vertical wall members, and a strip-shaped inlet attached to inner surfaces of the three vertical wall members such that the tear tape portion is covered with the inlet so as to ensure watertightness against the tear tape portion.

Abstract: A paper box for packing detergent which is provided at a side with a tear tape so as to be partially opened so that the paper box can be carried stably and opened easily. The paper box has four vertical wall members, top members extended from the vertical wall members, bottom members extended from the vertical wall members, a tear tape portion formed at upper portions of three vertical wall members selected from the four vertical wall members and beginning at a nail inserting hole formed at a middle portion of any of the vertical wall members, passing through the adjacent vertical wall member and terminating in a middle portion of the adjacent vertical wall member; and an inlet attached to inner surfaces of the three vertical wall members so as to cover the tear tape portion.